Improved alarm-lock



' iliairri gaat aient @Mira NICHOLAS SEUBERT, OF SYRCUSE, NEW YORK.

Letters Patent No.94,l37, dated August 24, 1869.

The Schedule referred to in these Letters Patent and making part Of the Same.

To all whom. it may concern,.-

' devices for locking and releasing the alarm; and

Figure is a detached front andV end view of the' bolt for locking the latch.

Letters of like name and vkind refer to like parts in each of the figures;

vMy invention consists, principally, in the devices employed for sounding an alarm when thel latch is withdrawn from, or returned to engagement with the catch, and, further, in the' devices for locking or arresting said alarm, so as to suspend its operation when" desired.

In the annexed -drawing"- A represents the case or box, of usual construction, in which is a latch, B, operated by means ofja tum- -bler, C, working a tumbler-fork, l) b, secured to and forming a part of said'latch. Y

vProjecting upward'ifrom the tumbler-fork b is a A -shaped stud, D, which, when the latch is moved in either direction, strikes against, and partially revolves a triangular cam, E,'pivoted to the casing.

F represents an L-shaped arm, pivoted to the 'casiug immediately above the cam E, so that the horizontal portion thereof shall rest uponthe upperq or horizontal face of said cam, unless removed from coutact therewith in the manner hereinafter described.

The vertical portion ofv said. arm, F, be'ars against a spring, G, the upper or free end of which -is bent forward, as shown inthe drawing, and has secured thereto a hammer, g.

A bell, H, is 'secured to the casing, immediately in front of, but not in contact with the hammer, so that when the latter is raised and suddenly released, its momentum will cause the spring to yield, and allow said hammer to strike against the bell.'

From the foregoing description, it willvbe seen that at each motion of the bolt, the hammer will be alternately raised and released by means of the stud I), cam E, and arm F, so as to produce asound or alarm. In order that the action of the alarm may be arrested, when desired, a barrel, I,corresponding-in in teror size and shape to' the shank of a key, and provided with a. slot in the wall,for the reception of the wards thereof, is suitably pivoted within the side plates of the casing A.

An arm, i, secured t0, and projecting outward from the barrel, is caused to bear against the inside edge of the vertical portion ofthe arm F, when saidbarrel is turned to the left, and by means of the peculiar shape 0f said arm, shown in the drawing, press it backward, and raise the'horizontal portion thereof from contact with the triangular cam.

When held in this position, seen in fig. l, the movements of the latch and cam have .no influence upon the arm F, and consequently the alarm is not sounded. i

To release the arm F, and place the alarm in gear, the barrel I is turned to the right one halfof a 'revolution, so as to bring the arm i against a stud, a', secured to the casing.

A double key-hole is provided in each side of the casing, which permits the key to be inserted or withdrawn, with the wards extending either upward or downward. f

In'order that the latch B may be locked, so as to .prevent its withdrawal from engagement with thccatch in the door-jamlna bolt, K, is placed immediately beneath the tumbler-fork b, andso secured to the casing as to have a horizontal motion. Y

From the front end of said bolt, projects outward a stud, 7c, which engages with suitable notches, ll, within the front ends of the tumblers L L, of ordinary construction, pivoted at their rear ends, and operated by a key, so as to secure said bolt in place when thrown forward or back. An' arm, t,'extends upward from. the rear end of the holt K,a11d, when said bolt is thrown forward, presses against the rear end of the tumbler-fork b, and rmly holds it in place, preventing the withdrawal l of the. latch, by which means the latch is made to per- 1. The hollow slotted barrel I, provided with the arm i, in combination with the angular arm F, substantially as and for the purposespecified.

2. Also, in combination with the above-described devices, the triangular cam E and stud D, the latter secured to, and operated with the latch B, substantially 'as and for the purpose specified;

In testimony that I claim the'foregoing,'1 have.

hereunto' set my hand, this 19th day of July, 1869.

' NICHOLAS SEIIIBERI.v

Witnesses: f

'JOSEPH H. SMr'rH, S'IEGMOND LEVY. 

